code: def sdm_sort(f, O):
      """Sort terms in ``f`` using the given monomial order ``O``."""
      return sorted(f, key=lambda term: O(term[0]), reverse=True)
  
imports: from itertools import permutations
  from sympy.polys.monomials import monomial_mul, monomial_lcm, monomial_div, monomial_deg
  from sympy.polys.polytools import Poly
  from sympy.polys.polyutils import parallel_dict_from_expr
  from sympy.core.singleton import S
  from sympy.core.sympify import sympify
label_desc: Use image node_id 8 for calling a global function with example usage: sdm_sort(f, O) and returns: sorted